Refilling-tool.



J. E. GRAYBILL.

BEFILLING TOOL. v

nrmonxox FILED MAY 1a. 1901.

928,044. Patented July 13, 1909.

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WiCnesscs: Inventor John E .Graybi I l,

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UNITED STATES PATENT OFFICE.

JOHN E. GRAYBILL, OF YORK, PENNSYLVANIA, ASSIGNOR TO GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK.

REFILLING-TOQL.

Specification of Letters Patent.

Application filed May 18, 1907.

Patented July 13, 1909.

Serial No. 374,424.

To all whom it may concern:

Be it known that 1, JOHN E. GRAYBILL, a citizen of the United States,residing at York, county of York, State of Pennsylvania, have inventedcertain new and useful Improvements in Refilling-Tools, of which thefollowing is a specification.

My invention relates to tools used in replacing filaments inincandescent lamps and the object is to provide a tool with which thevarious operations incident to removing a burned-out filament and topreparing a lamp for the reception of a new one can be very easily andquickly carried out, and more particularly to provide a tool whichenables the operator to bring the anchor wire into a suitable positionand by one movement of the tool to cut off the tip of the anchor wireand form a hookthereon for the reception of a new filament.

In the usual method of refilling an incandescent lamp, the operatormounts the lamp in a suitable holder in front of him and makes a smallopening in the tip of the bulb. Through this opening he removes theburned out filament and uses one tool to scrape the leading-in wires torid them of the paste used to attach the filaments to them. He then usesanother tool to cut off the tip of the anchor wire which is covered withthe paste used to fasten the filament to the anchor wire and then withstill another tool forms the tip of the anchor wire into a hook toreceive the new filament. As the opening through which the tools must.be introduced is very small, these various operations are performedwith considerable dif ficulty and when ordinary tools are used it isnecessary that the operator be skilled in this particular art beforesatisfactory results can be obtained, but when a tool embodying myinvention is used, the various operations are performed with muchgreater facility and the operator need not necessarily be skilled inorder to secure satisfactory results.

In carrying out my invention I mount any suitable devices for performingvarious operations upon a support in such a manner that the devices maybe introduced through a small opening into the bulb of the lamp which isto be renewed, and arrange these devices so that theyare operated inproper sequence by movement of actuating means mounted upon the supportand extendmg to a point always outside the bulb so that the ope 'atorhas as complete control of the operation of the devices inside the bulbas he would have if the bulb were absent. The tool may carry suitabledevices for performlng any of the operations required in renewing alamp, but the preferred form of device is a combined cutter and hookformer for cutting off the paste covered tip of the anchor wire andforming the end of the wire into a hook to hold the new filament; theseoperations being performed by one movement of the actuating means andwithout requiring any skill on the part of the operator.

My invention will best be understood in connection with the accompanyingdrawings which are merely an illustration of one of the many embodimentsof my invention and in which- Figure 1 shows in elevation a re-fillingtool constructed in accordance with my invention; Fig. 2 is aloi'igitudinal section of the toolshown in Fig. 1; Fig. 3 is a view ofthe end of the tool showing the groove by means of which the anchor wireis bent; Fig. a a view at right angles to that shown in Fig. 3, showingthe cutting edges and the forming die for making the hook in the end ofthe anchor wire; Fig. 5 a view showing the application of the tool to anincandescent lamp; Fig. 6 a view showing the parts in position to cutoff an anchor wire; and Fig. 7 a view of the end of a stem showing theanchor wire after the tip has been cut elf and a new hook has beenformed.

My invention may be embodied in many different forms, but in the formshown in the drawings the operating members are mounted on a supportcomprising a handle 1 so shaped thatit may be easily clasped by theoperator, and carrying operating members, one of which may be a tubeeasily introduced into the bulb of an incandescent lamp through a smallopening in the end of the bulb to reach the parts of the lamp, such asthe anchor wire, which are to be engaged by the operating members, theother operating member being shown in the drawings as a rod 3 slidablymounted in the tube 2 and normally held in the inoperative positionshown in Fig. 2 by means of a spiralspring 4; surrounding the rodengaging a pin passing through it. The operating members are actuated bymoving the rod 3 longitudinally in the tube 2 by means of an operatinglever 5 pivoted to the handle 1 on a pivot 6. The working parts of theoperating members are preferably, though not necessarily, mounted nearthe end thereof, and in the drawings the end of the tube 2 is preferablyformed to facilitate bending the anchor wire to one side to a. positionwhere the tip covered with paste can be cut off. Fig. 3 shows theportion on the end of the tube 2 with a guide or groove 8 therein of theproper size and shape to engage the anchor wire for enabling theoperator to bend it to the position shown in Fig. 5. This operatingmember also comprises a cutter 9 to cut the anchor wire, and a formingdie 10 to shape a hook on the anchor wire after it is cut. The cutter 9cuts the wire by cooperating with a cutter 11 carried upon and moved bythe other operating member, which is shown as the rod 3. The end of theanchor wire is formed into a hook by the cooperation of the forming die10 with another forming die consisting of a lug 12 on the end of the rod3 and of the cutter 11, which preferably has its cutting edge so placedthat the tip of the anchor wire is cutoff before the forming dies beginto act. The several operations on the anchor wire are thereforeperformed in succession during one stroke of the rod 3, which stroke isunidirectional with relation to the other operating member.

The operation of this device is as follows: A small opening is made inthe tip of the bulb and the tool is introduced as shown in Fig. 5. Theanchor wire is caught in the groove 8 and bent to one side until itassumes the position shown in Figs. 5 and 6. The tool is then placed sothat the anchor wire comes between the cutters 9 and 11, as shown inFig. 6, and the rod 3 is moved endwise by means of the handle 5. Thefirst result of this movement is to bring the cutters 9 and 11 together,thereby cutting oil the tip of the anchor Wire covered with the pastewhich held the burned out filament. Further movement of the operatingrod 3 brings the projection 12 into engagement with the anchor wire onone side of the forming die 10, while the side of the cutter 11 engagesthe cut end of the wire on the side of the forming die 10, the lug 12and the cutter 11 cooperating to make a forming die to bend the wirearound the forming die 10 into the shape of a hook, as shown in Fig. 7.When the hook has been formed, and the dies are gripping the wire, thetool is moved to bend the wire back to the position shown in Fig. 7, anda slight pull upon the wire straightens it. anchor wire from the tool,and the lamp is ready to receive the new filament. If the tool is somanipulated that the wire enters the cutter from the side opposite thatshown in Fig. 6, the wire is cut off and no hook is -formed, hence thetool may be used to cut off the paste covered tips of the leading-inwires, which do not require a hook on the end thereof.

My invention may be embodied in many other forms than those shown anddescribed and 1', therefore, do not wish to be restricted to the preciseform shown but intend to cover by the appended claims all changes andmodifications within the spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the UnitedStates, is,

1. A refilling tool for incandescent lamps comprising two elongatedmembers adapted to be inserted in the bulb of the lamp and mounted tomove longitudinally of each other, said members being provided with lugspositioned to cooperate and to perform on a wire a plurality ofoperations in succession during the uni-directional movement of saidmembers longitudinally of each other.

2. A refilling tool for incandescent lamps comprising two elongatedmembers adapted to be inserted in the bulb of the lamp and mounted toslide longitudinally on each other, each member being provided withcutting blades and lugs positioned to cooperate and thereby cut theanchor wire and bend it to form a hook during the longitudinalmovementof said members.

3. A wire working tool comprising two elongated members suitable forinsertion in the bulb of an incandescent lamp and mounted to slidelongitudinally of each other, each member being provided with a cuttingblade and a lug arranged with their sides parallel to the direction ofmovement of said members, the cutting blades being positioned to engageeach other and a lug on one member being positioned to pass between thelug and the cutting blade on the other member and thereby bend the wireto form a hook.

4. A wire working tool comprising two elongated members mounted to slidelongitudinally on each other, each member being provided with a cuttingblade and a lug positioned with their sides parallel to the direction ofmovement of said members, the lug on the first member being positionedto pass between the lug and cutting blade on the second member and thecutting blade on one of said members extending beyond its adjacent lugto engage the cutting blade on the other member and thereby cut a wirebefore the lugs engage the wire.

5. A refilling tool for incandescent lamps comprising a tubular memberadapted to be introduced into the bulb of a lamp, a cutting blade formedas a longitudinal extension beyond the tubular portion of said memberand a rod with a cutting blade on the end thereof slidably mounted insaid tubular member to move longitudinally introduced into the bulb ofthe lamp, a rod thereof and thereby bring the cutting blades bend theend of the anchor Wire to form a 10 into engagement. hook.

6. A refilling tool for incandescent lamps In Witness whereof, I havehereunto set comprising a tubular member adapted to be my hand thisfourteenth day of May, 1907.

mounted in said tube to slide longitudinally JOEL GRAX BILL thereof andcooperating lugs on said memitnesses: her and said rod positioned tocooperate to EDWARD J. LoUcns, cut the anchor Wire of the lamp and thenH. G. VEIST.

